npm outdated [<name> [<name> ...]]
This command will check the registry to see if any (or, specific) installed packages are currently outdated.
Default: https://registry.npmjs.org/
The base URL of the npm package registry.
Default: latest
If you ask npm to install a package and don't tell it a specific version, then it will install the specified tag.
Note: this has no effect on the npm-tag(1) command.
Default: Standard Output FD (1)
The file descriptor (integer) or stream object where npm will write
"normal" output. For instance, the ls and view commands write their
output here.
When using npm programmatically, you may want to provide a FileWriteStream, or some other form of WritableStream.